Adjustable wood cross bridging for floors and joists



June 3, 19248 S. W. ROTHROCK ADJUSTABLE WOOD CROSS BRIDGING FOR FLOORS AND JOIS'IS Filed Aug. 22 1922 iatented June 3, 1924..

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Be it known that I, simiia wl Room a citizen of the Unitedystates, and a resident of the city ofNe'w Yo'ilg'countyj of Queens, and State of New York, have' inventf ed a new and useful Improveiiient in jus table lVood' Cro's's Bridging 01? Floors and Joists, of which the following is a speciiication.

Heretofore, cross bridging hias been i invarlous' ways as byn'ietal strips oi strips d has been cut in a mill andsent tot A In any event,wlien tlieifwork' is done oi flth e j ob, great trouble is had' in" the biid'gingibeQ cause wooden joists and beams are always irregular and so this bridging, which is required' to'riiii hem? top to bottoinand diagonally across, cannot be the right length away from tliele iact place where" is to be used. Ificut-onthe job, wherei't is t o be used, the work" is neces"sa rj i ljy slowibec auseia great deal of time is consumed in cutting and fitting. v, I H H h The object of my" invention is to pro'vide a universal bridging which may" be used on any job and be prepared before it is sent to the'job and when used it cairbe readily adjusted to the desired length so as to always insure a good fit. This object is accomplished by my invention, several embodiments of which are hereinafter more particularly set forth.

For a more detailed description of my invention, reference is to be had to the accompanying drawings, forming a part hereof, in which Figure 1 is a sectional view of two beams connected by my improved bridging.

Figure 2 is a side elevation of this bridging as delivered to the job.

Figure 3 is an endview of the same.

Figure 4 shows this bridging secured between studs.

Figure 5 shows a modified structure, and

Figure 6 is an enlarged sectional view, taken on the line 66 of Figure 5, looking in the direction of the arrows.

Figure 7'shows yet a further modification.

Throughout the various views of the drawings, similar reference characters designate similar parts.

Referring to the modification shown in Figures 1 to 4: inclusive, it appears that two beams 1 or studs 2 are connected by the bridging; a This bridging 3 is composed of two parallel strips 4 with bands fi of steelfor other suitable material near eachend. These l' ,v Mg; T J. I: I bands safe made to overlap and each band s provided with two registering perforations tl'irou'gh which passes a nail and acorre} spending nail 6pa'sses through a singlepen foration adjacent to' the other two when the band is bent, as shown inl Figiir'e' 3:. When the bridging 3 is assembled in a it is sent from the mill in the condition shown in igures' 2 and 3 with the'nails 6 protruding and ente'ring one strip only and ready to be driven intot he other ,V g 5 The ends of the strips tarebeveled at an angle] of something likesinty degreesfand bored so as to have nail holest'o rebeivth nails 7, as indicated, twoof' these nails/7 te ing used at each end.

When the bridging reaches the" job it is given to a car'pen te i whoigo'es' the plate of use and slides one' strip 0" the other and measures the length of brldgijng" he desires from the topof'onebani tothejbpttom of the other. v Having deterj ndtliis measurement, he holds the twd strips while he drives home" the" nails (if He} then has the bri'd ging at the precise length des'ii'ed for the particular use intended. He then re places the bridging at the place of use and drives home the nails 7.

In the preferred embodiment of my invention, these nails 6 and 7 are covered with resin or some similar compound, so that they will hold firmly when once driven.

It will be noted that these nails 6 and 7 and the bands 5 prevent all separation of the strips t after assembly, and prior to the time of use. While these strips may he slid one on the other until the bands meet, in which position the bridging has its maxi mum length, yet the strips cannot be separated, It will also be noted that the coating of the nails will prevent them from shaking out or becoming loose in shipment, or use.

In Figures 5 and 6 is shown another embodiment of my invention with the nails omitted. In this structure the parts can be separated, but as the nails are omitted, it can be packed in less space. Here the strips 4: near one end of each have a groove 8 and staples 9 which hold a bent and pointed wire 10 which takes the place of the band 5, the ends 11 are left raised, as shown in Figure 6 and may be driven home as shown in dotted lines in this figure, by a ham mer blow when once the proper length has been determined, as above set forth.

In Figure 7 a further modification is shown which is much the same as the structure of Figures 5 and 6, except that in place of a wire 10, a band 12 is employed which is nailed to one strip 4; and adapted to be secured to the other strip by means of the serrated ends 13 when once the proper length of bridging has been determined, as above set forth.

In any embodiment of my invention, the bridging may be assembled at a mill and sent to the place of'use and there fitted by a carpenter on the job in a minimum time and with maximum convenience, and this is true regardless of the-length of the bridging required. Furthermore, itwill be noted that the strips 4c overlap at the center where the greatest strength is required.

If each piece 4 be made as shown in Figure 2 with a diagonal length of 14 inches from toe to toe, it is possible to fit all sizes of floor beams in common use "from 2"X6 to 4"x18 which are spaced from 12 to 24" between centers. I

While I have shown and described some embodiments of my invention, it is obvious that it is not restricted thereto, but that it is broad enough to cover all structures that come Within the scope of the annexed claims.

Having thus described my invention, what I claim is: r V

1. A bridging composed of two parallel and beveled strips, gripping devices, engageable with the two strips, and spaced a a band secured at one end and embracing the other strip and nails holding the bands in place the beveled ends being adapted to lie against and be secured to the adjacent parallel faces of a pair of beams.

3. A bridging composed of two parallel strips each having a band secured to one end by nails so that the strips may be adjusted and then the nails driven so as to hold the strips in fixed relation.

4. A bridging composed of two beveled strips with bands about the same, each band being secured at one end of each strip by nails and nails driven into each strip for securing the bridging to a joist or beam so that the strips cannot become separated when in transit or after assembly and prior touse.

5. A bridging composed of two beveled strips with bands about the same, each band being secured at one end of each strip by coated nails and coated nails driven into each strip for securing the bridging to a joist or beam so that the strips cannot become separated when in transit or after assembly and prior to use.

In testimony whereof, I have hereunto set my hand this 14th day or" August, 1922.

SAMUEL W. ROTHROCK. 

